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https://www.readbyqxmd.com/read/28100097/spina-bifida-and-lower-limb-amputation-in-northern-ireland-a-retrospective-study-of-demographics-and-outcome
#1
Lorraine Graham
BACKGROUND: Spina bifida is an uncommon cause for lower limb amputation. The causes and level of amputation and mobility outcome for these patients have not been reported previously. CASE DESCRIPTION: To identify the causes and level of amputation and the mobility outcome for amputee patients with spina bifida. STUDY DESIGN: Retrospective case series. METHODS: Chart review of patients identified by computer as having an amputation secondary to neurological or congenital cause...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28099473/the-staphylococcus-aureus-srrab-regulatory-system-modulates-hydrogen-peroxide-resistance-factors-which-imparts-protection-to-aconitase-during-aerobic-growth
#2
Ameya A Mashruwala, Jeffrey M Boyd
The SrrAB two-component regulatory system (TCRS) positively influences the transcription of genes involved in aerobic respiration in response to changes in respiratory flux. Hydrogen peroxide (H2O2) can arise as a byproduct of spontaneous interactions between dioxygen and components of respiratory pathways. H2O2 damages cellular factors including protein associated iron-sulfur cluster prosthetic groups. We found that a Staphylococcus aureus strain lacking the SrrAB two-component regulatory system (TCRS) is sensitive to H2O2 intoxication...
2017: PloS One
https://www.readbyqxmd.com/read/28099454/high-cable-forces-deteriorate-pinch-force-control-in-voluntary-closing-body-powered-prostheses
#3
Mona Hichert, David A Abbink, Peter J Kyberd, Dick H Plettenburg
BACKGROUND: It is generally asserted that reliable and intuitive control of upper-limb prostheses requires adequate feedback of prosthetic finger positions and pinch forces applied to objects. Body-powered prostheses (BPPs) provide the user with direct proprioceptive feedback. Currently available BPPs often require high cable operation forces, which complicates control of the forces at the terminal device. The aim of this study is to quantify the influence of high cable forces on object manipulation with voluntary-closing prostheses...
2017: PloS One
https://www.readbyqxmd.com/read/28099247/hypercoagulability-during-resternotomy-for-prosthetic-valve-endocarditis
#4
Andrew L Wilkey, Judah A Askew, Robert S Farivar, Tjorvi E Perry
No abstract text is available yet for this article.
January 18, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28098513/attrition-and-retention-in-upper-limb-prosthetics-research-experience-of-the-va-home-study-of-the-deka-arm
#5
Linda Resnik, Shana Klinger
PURPOSE: (1) Describe study attrition; (2) identify reasons for attrition, and (3) discuss implications for prosthetic prescription and design of future device studies. Design and methodological procedures used: Completion phase (during in-laboratory training, after training, or home use) was identified for 42 participants. Qualitative data were analyzed to identify attrition reasons. Reasons were classified as related to the DEKA arm, or not. RESULTS: Study attrition was 57%, with 43% completing the full study...
January 18, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28097422/novel-alignment-measurement-technique-for-total-knee-arthroplasty-using-patient-specific-instrumentation
#6
Kazumasa Yamamura, Yukihide Minoda, Shigekazu Mizokawa, Yoichi Ohta, Ryo Sugama, Suguru Nakamura, Hideki Ueyama, Hiroaki Nakamura
INTRODUCTION: This study was designed to evaluate the true accuracy of patient specific instrumentation (PSI) for total knee arthroplasty (TKA) using a new 3D measurement method. MATERIALS AND METHODS: Consecutive 21 patients (30 knees) who underwent TKA using computed tomography (CT)-based PSI were retrospectively evaluated. Mean patient age was 69.2 years (62 to 77). The postoperative three-dimensional (3D) CT image were superimposed onto the preoperative 3D CT plan and measured the absolute difference in the prosthetic alignment using six parameters: coronal, sagittal, and axial alignment of the femoral and tibial prostheses...
January 17, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28097171/structural-insights-into-the-effects-of-charge-reversal-substitutions-at-the-surface-of-horseradish-peroxidase
#7
Leila Navapour, Navid Mogharrab
Horseradish peroxidase (HRP), has gained significant interests in biotechnology, especially in biosensor field and diagnostic test kits. Hence, its solvent-exposed lysine residues 174, 232, and 241 have been frequently modified with the aim of improving its stability and catalytic efficiency. In this computational study, we investigated the effects of Lys-to-Glu substitutions on HRP structure to model charge-reversal manipulations at the enzyme surface. Simulation results implied that upon these substitutions, the number of stable hydrogen bonds and α-helical content of HRP are increased and the proximal Ca2+ binding pocket becomes more integrated...
September 2016: Molecular Biology Research Communications
https://www.readbyqxmd.com/read/28096320/streptococcus-gordonii-a-rare-cause-of-prosthetic-joint-infection-in-a-total-hip-replacement
#8
Christopher Fenelon, John G Galbraith, David M Dalton, Eric Masterson
A 69-year-old female with a history of bilateral total hip replacements presented with rigors, fever and sudden onset left groin pain. A pelvic X-ray showed well-fixed implants. Blood results revealed a leucocytosis (white cell count 22.3 × 10(9) l(-1)) and elevated C-reactive protein (211 mg/l). Ultrasound-guided aspiration of her left hip grew Streptococcus gordonii No source infection could be identified apart from a new chronic sinus infection in a left upper incisor. Following a discussion with the patient a 6-week course of intravenous ceftriaxone was started and was successful in normalizing her inflammatory markers...
January 16, 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28096184/the-modern-role-of-transoesophageal-echocardiography-in-the-assessment-of-valvular-pathologies
#9
REVIEW
Malgorzata Wamil, Sacha Bull, James Newton
Despite significant advancements in the field of cardiovascular imaging, transoesophageal echocardiography remains the key imaging modality in the management of valvular pathologies. This paper provides echocardiographers with an overview of the modern role of TOE in the diagnosis and management of valvular disease. We describe how the introduction of 3D techniques has changed detection and grading of valvular pathologies and concentrate on its role as a monitoring tool in interventional cardiology. In addition, we focus on the echocardiographic and Doppler techniques used in the assessment of prosthetic valves, and provide guidance for evaluation of prosthetic valves...
January 17, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28095724/reverse-hybrid-total-hip-arthroplasty
#10
Helge Wangen, Leif I Havelin, Anne M Fenstad, Geir Hallan, Ove Furnes, Alma B Pedersen, Søren Overgaard, Johan Kärrholm, Göran Garellick, Keijo Mäkelä, Antti Eskelinen, Lars Nordsletten
Background and purpose - The use of a cemented cup together with an uncemented stem in total hip arthroplasty (THA) has become popular in Norway and Sweden during the last decade. The results of this prosthetic concept, reverse hybrid THA, have been sparsely described. The Nordic Arthroplasty Register Association (NARA) has already published 2 papers describing results of reverse hybrid THAs in different age groups. Based on data collected over 2 additional years, we wanted to perform in depth analyses of not only the reverse hybrid concept but also of the different cup/stem combinations used...
January 18, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28095521/evaluation-of-ultrashort-and-longer-implants-with-microrough-surfaces-results-of-a-24-to-36-month-prospective-study
#11
Luciano Malchiodi, Riccardo Caricasulo, Alessandro Cucchi, Raffaele Vinci, Enrico Agliardi, Enrico Gherlone
PURPOSE: The aim of this prospective study was to establish if ultrashort implants are a reliable therapeutic solution by evaluating their effect on mean crestal bone loss and assessing their survival and success rates. MATERIALS AND METHODS: Patients were treated using 6-, 9-, and 11-mm-long implants with sandblasted and acid-etched surfaces and fitted with fixed partial prostheses. Clinical and radiographic examinations were scheduled yearly. Data collected included the implant positioning site, implant length and diameter, peri-implant bone loss (PBL), and clinical and anatomical C/I ratios...
January 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28095518/long-term-results-of-peri-implant-conditions-in-periodontally-compromised-patients-following-lateral-bone-augmentation
#12
Philip L Keeve, Fouad Khoury
PURPOSE: The aim of this retrospective study was to compare long-term (≥ 5 years) outcomes of implants placed in patients treated for chronic periodontitis versus those placed in periodontally healthy patients. In both groups, the implants were placed in alveolar ridges that were laterally augmented with autogenous bone block grafts using a split bone block technique. MATERIALS AND METHODS: Two hundred ninety-two patients were screened in the course of supportive periodontal treatment examinations...
January 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28095358/axial-and-torsional-stiffness-of-pediatric-prosthetic-feet
#13
Paolo Taboga, Alena M Grabowski
BACKGROUND: Prosthetic stiffness likely affects the walking biomechanics of toddlers and children with leg amputations, but the actual stiffness values for prostheses are not reported by manufacturers or in standardized testing procedures. AIM: We measured axial (kA) and torsional (kT) stiffness from four brands of pediatric prosthetic feet (Trulife, Kingsley Mfg. Co., TRS Incorporated, and College Park Industries) over a range of foot sizes. METHODS: We applied forces and torques onto prostheses with a materials testing machine that replicated those exhibited in vivo by using the kinetics measured from four non-amputee toddlers (2-3years) during walking...
January 5, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28094825/what-people-want-in-a-prosthetic-foot-a-focus-group-study
#14
Donald J Fogelberg, Katheryn J Allyn, Monica Smersh, Murray E Maitland
No abstract text is available yet for this article.
October 2016: Journal of Prosthetics and Orthotics: JPO
https://www.readbyqxmd.com/read/28094689/quantification-of-rectifications-for-the-northwestern-university-flexible-sub-ischial-vacuum-socket
#15
Stefania Fatone, William Brett Johnson, Lilly Tran, Kerice Tucker, Christofer Mowrer, Ryan Caldwell
BACKGROUND: The fit and function of a prosthetic socket depend on the prosthetist's ability to design the socket's shape to distribute load comfortably over the residual limb. We recently developed a sub-ischial socket for persons with transfemoral amputation: the Northwestern University Flexible Sub-Ischial Vacuum Socket. OBJECTIVE: This study aimed to quantify the rectifications required to fit the Northwestern University Flexible Sub-Ischial Vacuum Socket to teach the technique to prosthetists as well as provide a computer-aided design-computer-aided manufacturing option...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28094687/successful-management-of-femoral-trauma-in-a-through-knee-amputee-with-a-previous-malunited-fracture-implications-and-functional-outcome
#16
Beth Lineham, Paul Harwood, Peter Giannoudis
BACKGROUND: After amputation patients are more likely to injure their residual limb. An injury of a previously amputated limb, especially if the residuum is not anatomically normal, poses a dilemma for management. Case Description and Methods: This case report discusses a femoral fracture sustained proximal to a through-knee amputation. Findings and outcomes: The fracture was at the site of a malunited fracture. A shortening osteotomy with bone graft was undertaken to improve alignment and prosthetic fit and remove poor-quality bone...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28094686/northwestern-university-flexible-subischial-vacuum-socket-for-persons-with-transfemoral-amputation-part-1-description-of-technique
#17
Stefania Fatone, Ryan Caldwell
BACKGROUND: Current transfemoral prosthetic sockets restrict function, lack comfort, and cause residual limb problems. Lower proximal trim lines are an appealing way to address this problem. Development of a more comfortable and possibly functional subischial socket may contribute to improving quality of life of persons with transfemoral amputation. OBJECTIVES: The purpose of this study was to (1) describe the design and fabrication of a new subischial socket and (2) describe efforts to teach this technique...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28094681/relationship-between-body-height-and-spatiotemporal-parameters-during-a-100-m-sprint-in-able-bodied-and-unilateral-transtibial-sprinters
#18
Hiroaki Hobara, Wolfgang Potthast, Ralf Müller, Yoshiyuki Kobayashi, Satoru Hashizume, Thijs A Herdoorn, Masaaki Mochimaru
BACKGROUND: Although anthropometric factors could influence sprint performance in able-bodied sprinters, little is known about the relationships between these anthropometric factors and sprint performance in amputee sprinters. OBJECTIVES: To investigate the relationships between body height and spatiotemporal parameters of 100-m sprints in unilateral transtibial amputee and able-bodied sprinters. STUDY DESIGN: This is a cross-sectional study...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28094193/factors-associated-with-infection-after-reconstructive-shoulder-surgery-for-proximal-humerus-tumors
#19
Sjoerd Th Meijer, Nuno R Paulino Pereira, Sjoerd P F Th Nota, Marco L Ferrone, Joseph H Schwab, Santiago A Lozano Calderón
BACKGROUND: The main reconstruction techniques for proximal humerus tumors include osteoarticular allografts (OAs), endoprostheses (EPs), or allograft prosthetic composites (APCs). A common complication is infection, and constructs involving the use of allografts are believed to be at a higher risk of infection. Literature comparing infection rates between different modalities of reconstruction is scarce and underpowered. The study purposes were (1) to determine and compare the prevalence of infection in patients who underwent reconstruction of the proximal humerus including OAs, EPs, and APCs; (2) to identify preoperative, perioperative, and postoperative predictors of infection that might be modifiable; and (3) to present our protocol of treatment in patients with superficial and deep infections...
January 13, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28094191/functional-results-of-bilateral-reverse-total-shoulder-arthroplasty
#20
Chris R Mellano, Robert Thorsness, Peter N Chalmers, Terrence F Feldheim, Patrick O'Donnell, Brian J Cole, Nikhil N Verma, Anthony A Romeo, Gregory P Nicholson
BACKGROUND: The purpose of this study was to analyze a population of patients with bilateral reverse total shoulder arthroplasty (RTSA) to evaluate their ability to perform activities of daily living and personal hygiene tasks. METHODS: At a minimum 2-year follow-up, we retrospectively reviewed 50 patients (100 shoulders) with a mean age of 72 years who underwent staged bilateral RTSA. The average follow-up period was 61 months (range, 24-121 months), with a minimum 2-year follow-up after the second surgical procedure...
January 13, 2017: Journal of Shoulder and Elbow Surgery
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